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arXiv · 2506.00516

Jet breakup dynamics of viscoelastic carboxymethyl cellulose solutions

Ketan Vinayak Warghat·Yogesh Biswal·Sukesh Sharma·Pankaj Sharadchandra Kolhe·Lakshmana Dora Chandrala·Kirti Chandra Sahu
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Abstract

We experimentally investigate the breakup dynamics of viscoelastic jets composed of carboxymethyl cellulose (CMC) solutions, focusing on the dripping and Rayleigh regimes at low flow rates. By varying the CMC concentration, needle diameter ($D_n$), and flow rate ($Q$), we analyze the effects of elasticity, viscosity, and flow conditions on jet stability and droplet formation. Our results show that increasing CMC concentration enhances viscoelastic effects, leading to prolonged jet lifetimes, extended liquid threads, and modified pinch-off behavior. At higher concentrations, elasticity suppresses capillary-driven instabilities, slowing thinning and facilitating the formation of beaded structures. We observe that the interplay between inertial, capillary, and elastic forces, influenced by CMC concentration, governs the jet length, droplet volume, and breakup time, with needle diameter and flow rate playing a crucial role in jet breakup phenomenon.

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Ketan Vinayak Warghat, Yogesh Biswal, Sukesh Sharma, Pankaj Sharadchandra Kolhe, Lakshmana Dora Chandrala, Kirti Chandra Sahu. 2025-05-31. Jet breakup dynamics of viscoelastic carboxymethyl cellulose solutions. https://arxiv.org/abs/2506.00516

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